Merge pull request #83 from jeffv/master

Fixes npm install to check version before running

nvm.sh

@@ -114,9 +114,18 @@ nvm()
         nvm use $VERSION
         if ! which npm ; then
           echo "Installing npm..."
-          # TODO: if node version 0.2.x add npm_install=0.2.19 before sh
+          if [[ "`expr match $VERSION '\(^v0\.1\.\)'`" != '' ]]; then
+            echo "npm requires node v0.2.3 or higher"
+          elif [[ "`expr match $VERSION '\(^v0\.2\.\)'`" != '' ]]; then
+            if [[ "`expr match $VERSION '\(^v0\.2\.[0-2]$\)'`" != '' ]]; then
+              echo "npm requires node v0.2.3 or higher"
+            else
+              curl http://npmjs.org/install.sh | clean=yes npm_install=0.2.19 sh
+            fi
+          else
             curl http://npmjs.org/install.sh | clean=yes sh
           fi
+        fi
       else
         echo "nvm: install $VERSION failed!"
       fi